Charles e



(N0 Modem O. E. HUNTLEY.

LOOOMOTIVEIBXHAUST PIPE. No. 420,643. Patented Feb. 4, 1890-.

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WITNESSES. IIVVE/VTOI? 4 yaw 6176M UNITED STATES CHARLES E. HUNTLEY, OF IONIA, MICHIGAN, ASSIGN OR OF ALLAN F. HERBERT, OF SAME PLACE.

PATENT OFFICE.

ONE-HALF TO LOCOMOTIVE EXHAUST- -PIPE.

SPECIFICATION forming part of Letters Patent No. 420,643, dated February 4, 1890. Application filed April 21, 1888. Serial No. 271,433. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. HUNTLEY, a citizen of the United States, residing at Ionia, in the county of Ionia and State of Michigan, have invented a new and useful Improvement in Steam-Exhaust Pipes, of which the following is a specification.

My invention relates to an improvement in steam-exhaust pipes in use upon locomotive steam engines and other steam engines where it is necessary or desirable to exhaust the dead-steam from the engine-cylinders into the smoke-stack for the purpose of increasing the draft of the furnace to facilitate the combustionof fuel for raising and sustaining the pressure of steam in steam-boilers. The present method of producing this result is to increase the velocity of the exhausting steam by reducing the size of the exhaust-pipe at the open end, as shown at D 1n Figure l of the accompanying drawings, thus diminishing the volume of steam suffic1ently to require an amount of force in ej ectlng the steam from the cylinder to the open air that will produce the desired draft of air in the furnace. This form of exhaust-pipe diminishes the volume of steam and forces it directly upward in a solid column from the mouth of the exhaust-pipe with such force that it can diverge but slightly in its passage to the open air at the top of the smoke-stack, thus forming a current or draft in the center of the smoke-stack only, and requiresa much greater amount of force to eject the exhauststeam from the cylinder, and causing a correspondingly greater amount of back-pressul e upon the piston to produce the desired amount of draft than would be necessary if the volume of steam could be increased at the mouth of the exhaust-pipe and the column be made to gradually diverge as it passes up ward until it covers the entire diametrical area of the smoke-stack before it reaches the open air.

The objects of my invention are, first, to diminish the back-pressure of the exhauststeam upon the piston of a steam-engine, and more particularly upon locomotive-engines, byincreasing the area of the exhaust in such a manner that it will not diminish the draft through the furnace.

of the furnace; second, to cause the column of steam upon leaving the mouth of the exhaust-pipe to diverge sufficiently to fill the entire diametrical area of the smoke-stack before escaping to the open air. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Fig. 1 is an elevation of an exhaust-pipe as commonly used upon locomotives and other engineswhere it is necessary to throw the exhaust-steam into or through the smoke-stack for the purpose of increasing the draft of air Fig. 2 is a sectional view of an exhaust-pipe with the upper. secv.tion B of the pipe of uniform size for the reception of the cone D, which forms the main feature of my invention. Fig. 3 is an elevation of the same, showing the relative positions of the exhaust-pipe and the smoke-stack upon locomotives. Fig. 4 is an end View of my device and an exhaust-pipe, showing the manner of attaching my device with bolts; and Fig. 5 shows form of same where they are attached by means of inclines, as shown in Fig. 3.

Similar letters refer to similar out the several views.

A is the lower section of a locomotive exhaust-pipe.

. B is the upper section.

0 O are steamways leading from the en ginecylinders.

D is my appliance, and D the usual form of the upper section of an exhaust-pipe as arranged to produce a greater draft.

E is the bottom of a locomotive smokestack, and F is an annular steam-port formed in the upper end of the exhaust-pipe by inserting the cone D.

To attain the objects of my invention, I make the upper portion 13 of the exhaust-pipe of a uniform size with the lower portion A, and insert in the top of the upper portion of pipe a short sharp cone of iron or other suitable material, which holds its conical form. from the point at P, diverging up-' ward and outward to the base at b, which is left straight about two inches, and is firmly attached to the arm or bar a level with the parts throughtop of the exhaust-pipe. A plain cylindrical the entire area of the stack at a point ashort distance below the top.

The cone D is made somewhat smaller at its base than the inside diameter of the exhaust-pipe and is inserted into the top of the exhaust-pipe, as shown in Fig. 2, for the purpose, first, of reducing the mouth of the exhaust-pipe sufficiently to create a given amount of force in the expulsion of steam from the cylinders; second, of forming a thin annnlarcolumn of steam above the mouth of the exhaust-pipe instead of a solid column of 1 steam, such as is the result of the form of pipe'illustrated in Fig. 1, now in oommo n nse, and, third, to give to the annular column of l exhaust-steam a slightly-diverging tendency, which enables me to utilize the force of the w h the least possible amount of back-pressure upon the engine-pistons; To the'base of this cone I attach an armor arms a, to which it is firmly secured, and which extends over the topof the exhaust-pipe at each side, and v is secured firmly thereto by means of bolts 6', passing through the ends of these arms and through corresponding lugs b at the top of the eichaust-pipe, as shown in Figs. 2 and 4, or by means of inclines b on the sides of the eshaustpipe, which interlock with correexhanst-steam, so as to produce the greatest 3 possible amount of draft through the furnace sponding lugs 0, formed at the ends of the arms, as shown in Figs. 3 8.1](15, or in any other suitable manner, so that the cone D will stand exactly in the center of the exhaustpipe, with the upper end of the base I) level with the top of the pipe and the cone proj ecting downward inside of the pipe and forming a narrow annular portF between the cone and the walls of the exhaust-pipe for the escape of the exhaust-steam.

I am aware that inverted cones have been used upon locomotive exhaust-pipes for the purpose of diverging the column of exhauststeanl. I therefore do not claim this, broadly, as my invention; but

What I do claim as new, and desire to secure by Letters Patent of the United States, is-

The combination, in a locomotive exhaustpip e, of an exhaust-pipe of uniform size, proyided at its upper end with lugs tor securing a cone, a cone having acylindrical body forming an annular flue or steam-portof uniform size for some distance down into the mouth of the exhaust-pipe, an arm extendingacross the mouth of the exhaust-pipe and attached to the base of the cone, so that the top of the base will come level with the top of the exhaust-pipe, and engagin g with the lugs on the upper end of theeXhaust-pipe for snpportin g the cone, substantially and for the purpose set forth.

$ign ed at Ionia, in lonia county, and State of Michigan, th i sllth day of April, 1888.-

CHARLES HUNTLEY.

In presence off- AL N F- H ERT ears A- E 

